Improvement in shutter-fasteners



0. RUSSELL.

Shutter-Fastener.

No. 161,556, Patented March 30, I875.

Inventor;

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CHARLES RUSSELL, OF WORCESTER, MASSACHUSETTS, ASSIGNOR OF ONE- HALF HISRIGHT TO EDWIN SCHOFIELD, OF SAME PLACE.

IMPROVEMENT IN SHUTTER-FASTENERS.

Specification forming part of Letters Patent No. 161,556, dated March30, 1875; application filed December 15, 1874.

To all whom it may concern Be it known that I, CHARLES RUSSELL, ofWorcester, in the county of Worcester, State of Massachusetts, haveinvented a certain new and useful Improvement in Blind-Fasteners, ofwhich the following is a description sufficiently full, clear, and exactto enable any person skilled in the art or science to which my inventionappertains to make and use the same,-reference being had to theaccompanying drawing forming a part of this specification, in whichFigure l is an isometrical perspective view, showing my improvedfastener detached from the blind; and Fig. 2, a view of the staple orcatch employed in holding the blind open.

Like letters of reference indicate corresponding parts in the differentfigures of the draw- 111g.

My invention relates to that class of blind fasteners which areautomatic or self-locking; and consists in a novel construction andarrangement of the parts, as hereinafter more fully set forth andclaimed, by which a simpler, cheaper, and more effective device of thischaracter is produced than is now in ordinary use.

In the drawing, A represents the box or case of the fastener, which isdesigned to be attached to the under side of the lower crossrail of theblind. A pawl, 13, pivoted at one end to the interior of the case, is sodisposed therein as to swing freely in a lateral direction, and isprovided with the push-rod 0, projecting through the interior side ofthe case at w. A flattened steel spring, (I d, is bent around and heldin position by the vertical studs 6 e in such a manner that its freeends press laterally upon the two opposite sides of the pawl, tending toretain it in a central position in the case. The staple F, bent as shownin Fig. l, and provided with the notch G, is de' signed to be driveninto the window-sill, a like staple, but straight, as shown in Fig. 2,

being driven into the side of the building. These staples co-operatewith the other parts to secure the blind in position when either shut oropen, as the case may be, and for that purpose two apertures or holes,22, are formed in the sides of the box A, through both of which the endsof the staples pass.

From the foregoing the nature and operation of my invention will bereadily obvious to all conversant with such matters.

In closing the blind the staple F will pass into the case A through thehole 2, and, striking the free end of the pawl B, will push it aside,and pass out of the case through the hole z, the end of the pawl fallinginto the notch G, thus locking the blind. If, now, it is desired torelease or open the blind, it will be necessary to push the rod Cinwardly until the pawl is freed away from the staple, when the blindmay be swung back against the building, the staple therein entering thehole 2, and pushing the pawl aside, as before, but in an oppositedirection, and again securing the blind.

It will be seen, however, that to unlock the fastener when the blind isopened, the rod C must be pulled instead of pushed, as the point of thepawl will then be on the side of the case farthest from the building, orin a position opposite to that required when the blind is closed.

Having thus explained my invention, what I claim is- The improvedblind-fastener described, the same consisting of the case A, providedwith the pawl B, spring d d, and rod C, constructed and arranged tooperate in combination with the notched staple F, substantially as andfor the purpose specified.

CHARLES RUSSELL. [L. s]

Witnesses:

CHAs. B. PRATT, GEO. E. KENDALL.

